i am looking at my options for a new motor for the Jimmy, but need some more info. What are my options? GM Performance Motor or a TBI replacement? Can i put in a carbed engine? I like the 383 truck engine but what would i need to get it running in my rig. Fuel pump, distributor exc... If i get an engine where i use my stock TBI, the problem is that my TBI system is the biggest headache i have ever had. Any first person experience would help. ps i dont think i can spend more than $4gs.